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Post by ducatisti on Feb 20, 2019 9:28:55 GMT
I was at Stockwell Northern Northbound yesterday (as the vic was part-suspended). On the headwall there is a bright white light that seemed to come on as a train drew to a halt and went out when the last car passed it. So far, so signal-like, but it is right out of the driver's eyeline, being over the pedestrian egress tunnel (runs out parallel to the running tunnel), and with a mesh cage of misc equipment between the two tunnels. Can anybody say what it is? trip-cock tester? Kennington tea-point indicator?  Thanks |
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Post by jetblast787 on Feb 20, 2019 9:42:47 GMT
I think you're referring to the TBTC light indicator that tells platform staff that the indicated departure time has been reached and that the train is ready to depart
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Colin
Advisor
My preserved fire engine!
Posts: 11,348
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Post by Colin on Feb 20, 2019 9:48:47 GMT
^^^^^ Yes, what jeblast787 said ^^^^^
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Post by ducatisti on Feb 20, 2019 10:34:09 GMT
Ahh, I didn't know such a thing existed. I've not noticed one at any other stations - are they widespread, or is Stockwell particularly favoured? (which would make sense as it will be affected by any Kennington carryings-on.
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Post by Dstock7080 on Feb 20, 2019 10:34:27 GMT
Can anybody say what it is? trip-cock tester? Thanks remember that Northern Central Jubilee Victoria Line trains do not have tripcocks. |
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Post by goldenarrow on Feb 20, 2019 10:43:56 GMT
Officially they are referred to as Ready To Depart Indicators (RTDI’s) which should light up approximately 10 seconds before departure coinciding with the "ATO Start Required" message displayed to the driver at the given time. Most stations (those which have them) on the Jubilee and Northern have them midway down the platform however at some underground stations, RTDI’s are at the headwall for sighting purposes. flic.kr/p/99vQv1 : Photo by bowoaduk of an RTDI at West Hampstead Southbound Platform 2  |
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rincew1nd
Administrator
Junior Under-wizzard of quiz
Posts: 10,286 
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Post by rincew1nd on Feb 20, 2019 11:33:54 GMT
So which stations are so equipped?
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Post by goldenarrow on Feb 20, 2019 14:40:37 GMT
So which stations are so equipped? With RTDI's? Almost all of the below ground stations on those two lines have them. I say most because I can't recall weather all below ground stations are required to have them but all the stations that usually feature platform dispatch (aswell as termini stations) need to have them for obvious reasons. If you were asking about RTDI's at the helm of platforms then the Northern line has several with Edgware, Camden Town (SB), Warren St, Goodge Street, Charing X, Waterloo (Northern) and Kennington (NB) to name a few. Clapham North and Clapham Common are a bit more unique in that both RTDI's are at the Southern end of the platforms by the staircase meaning that their Northbound platforms have an RTDI at the rearmost of the platform. |
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Post by philthetube on Feb 20, 2019 16:41:41 GMT
On the S stock the white line is going to appear on the train and not on the platform, in the same bank as the door indicator lights, Yellow, and the De-icer lights, Blue,
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